The Mage's college quest line was weak. In Oblivion I stopped a long dead necromancer from coming back and enslaving the realm. In Skyrim I stop a shady elf who is trying to do something unexplained using a tiny death star. I dive 2 ruins and kill an elf and they name me ArchMage. The final 'epic' battle of the questline was so pathetic I don't even want to mention it. Weak sauce guys. Considering that magic itself has been totally ****ed up (no spell crafting, hardly any daedra for conjuring) they could have at least made the questline worth my time.

That was underwhelming.

Everyone else here has been praising the Mage College quests, including me. Are you referring to the Staff of Magnus quest? That was no cake walk and you explore a good bit of ground.